Q941F and Q941Y type PN16~PN63 electric ball valves
The Q941F electric ball valve is suitable for applications requiring frequent operation, two-position shut-off, and regulation. The ball valve is directly connected to the actuator, which has a built-in servo system, eliminating the need for a separate servo amplifier. It can be controlled with a 4~20mA input signal and 220V AC power. It features simple wiring, compact structure, tamanho pequeno, light weight, low resistance, and stable and reliable operation. Different models of electronic electric actuators can be configured according to user requirements.
Nome do produto: Electric Ball Valve
Modelo de produto: Q941F
Diâmetro Nominal: DN15~DN300
Tipo de estrutura: Esférico
Pressão Nominal: 1.6Mpa~6,4Mpa
Método de conexão: Flange, Wafer, Threaded, Welded
Temperatura aplicável: ≤350ºC
Método de atuação: Electric (Manual Operation Available)
Material do corpo da válvula: Aço fundido, Aço inoxidável
Padrão de Fabricação: GB (Padrão Nacional Chinês), DE (Padrão Alemão), API (Padrão Americano), ANSI (Padrão Americano)
Mídia Aplicável: Água, Óleo, Gás, Líquido
Fabricante: Válvula Co. de Zhejiang Kozo., Ltda.
Classification characteristics
Types of electric ball valves include: hard seal ball valve, soft seal ball valve, floating ball ball valve, fixed ball valve, track ball valve, V-shaped ball valve, válvula de esfera de três vias, stainless steel ball valve, forged steel ball valve, ash discharge ball valve, anti-sulfur ball valve, válvula de esfera de três vias, pneumatic ball valve, electric ball valve, card sleeve ball valve, welded ball valve, flange ball valve, threaded ball valve.
Hard seal: Sealing material: metal-to-metal seal (such as stainless steel, carbide), surface hardness increased through precision processing (such as spraying, surfacing) (valve body HRC78, valve seat HRC72). High temperature and high pressure: It can withstand temperatures from -196°C to 600°C and pressures from 1.6-150MPa. It is suitable for steam, hot oil, high-pressure gas and other media. Corrosive media: The metal sealing surface is resistant to acid and alkali corrosion (such as highly corrosive fluids in chemical production). Media containing particles: The metal has high hardness, strong wear resistance, and is not easily damaged by particle erosion (such as coal, fiber media). Fire protection requirements: The metal structure remains stable at high temperatures and will not cause leakage due to material softening. Sealing: There are microscopic gaps in the metal sealing surface, and trace leakage is acceptable in industrial scenarios; high-precision hard-sealed ball valves (such as spring preload structures) can control leakage to very low levels. Wear resistance: The sealing surface has high hardness (such as valve seat HRC72), which is not easy to wear after long-term use and has a long service life. Operating force: The friction between metals is large, and the opening and closing torque is higher than that of soft-sealed ball valves, but the spring preload design can optimize the operating experience. Cost: The material and processing accuracy requirements are high, and the price is usually higher than that of soft sealing ball valves.
Soft seal: Sealing material: non-metallic material (such as PTFE, rubber), which is elastic and can compensate for processing errors. Structural features: Mainly floating ball type, the ball and valve seat are sealed through elastic deformation of soft materials. The sealing ring is usually designed to be movable and easy to remove and replace. Clean low-pressure medium: suitable for clean fluids such as water, solvents, acids, gás natural, etc., the pressure is generally lower than 6.4MPa. Low temperature environment: The operating temperature range is usually -40°C to 180°C. Exceeding the range may cause aging or deformation of the sealing material. Contains suspended particles: The ball has wiping properties when opening and closing, which can remove particles attached to the sealing surface, but long-term use may wear the sealing surface. Sealing: The soft material has good elasticity and can tightly wrap the sphere to achieve “vazamento zero”. It is suitable for scenes with strict leakage requirements (such as the food and pharmaceutical industries). Flow resistance: full-bore design, smooth flow path, small flow resistance, and low pressure loss. Operating force: small opening and closing torque, flexible operation, and easy for remote control. Maintenance: The sealing ring is a wearing part and needs to be replaced regularly, and the long-term use cost may be high.
Floating ball: The ball of the ball valve is floating. Under the action of medium pressure, the ball can produce a certain displacement and press tightly against the sealing surface of the outlet end to ensure the sealing of the outlet end. The floating ball valve has a simple structure and good sealing performance, but all the load of the working medium on the ball is transferred to the outlet sealing ring. Therefore, it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. When subjected to a higher pressure impact, the ball may deflect. This structure is generally used for medium and low pressure ball valves.
Floating ball: The ball of the ball valve is floating. Under the action of medium pressure, the ball can produce a certain displacement and press tightly against the sealing surface of the outlet end to ensure the sealing of the outlet end. The floating ball valve has a simple structure and good sealing performance, but all the load of the working medium on the ball is transferred to the outlet sealing ring. Therefore, it is necessary to consider whether the sealing ring material can withstand the working load of the ball medium. When subjected to a higher pressure impact, the ball may deflect. This structure is generally used for medium and low pressure ball valves.
Fixed ball: The ball of the ball valve is fixed and does not move when pressed. Fixed ball and ball valves all have floating valve seats. After being subjected to medium pressure, the valve seat moves, causing the sealing ring to press tightly on the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the ball, with small operating torque, and are suitable for high-pressure and large-diameter valves. In order to reduce the operating torque of the ball valve and increase the reliability of the seal, lubricating oil is used to form an oil film, which enhances the sealing and reduces the operating torque. It is more suitable for high-pressure and large-diameter ball valves.
Fixed ball: The ball of the ball valve is fixed and does not move when pressed. Fixed ball and ball valves all have floating valve seats. After being subjected to medium pressure, the valve seat moves, causing the sealing ring to press tightly on the ball to ensure sealing. Bearings are usually installed on the upper and lower shafts of the ball, with small operating torque, and are suitable for high-pressure and large-diameter valves. In order to reduce the operating torque of the ball valve and increase the reliability of the seal, lubricating oil is used to form an oil film, which enhances the sealing and reduces the operating torque. It is more suitable for high-pressure and large-diameter ball valves.
Elastic ball: The ball of the ball valve is elastic. The ball and valve seat sealing ring are both made of metal materials, and the sealing specific pressure is very large. The pressure of the medium itself cannot meet the sealing requirements, and external force must be applied. This kind of valve is suitable for high temperature and high pressure media. The elastic sphere obtains elasticity by opening an elastic groove at the lower end of the inner wall of the sphere. When closing the channel, use the wedge-shaped head of the valve stem to expand the ball and compress the valve seat to achieve a seal. Loosen the wedge-shaped head before turning the ball, and the ball will return to its original shape, leaving a small gap between the ball and the valve seat, which can reduce friction on the sealing surface and operating torque.
Elastic ball: The ball of the ball valve is elastic. The ball and valve seat sealing ring are both made of metal materials, and the sealing specific pressure is very large. The pressure of the medium itself cannot meet the sealing requirements, and external force must be applied. This kind of valve is suitable for high temperature and high pressure media. The elastic sphere obtains elasticity by opening an elastic groove at the lower end of the inner wall of the sphere. When closing the channel, use the wedge-shaped head of the valve stem to expand the ball and compress the valve seat to achieve a seal. Loosen the wedge-shaped head before turning the ball, and the ball will return to its original shape, leaving a small gap between the ball and the valve seat, which can reduce friction on the sealing surface and operating torque.
Q941F and Q941Y type PN16~PN63 electric ball valves
Electric ball valves are typically used in applications requiring strict sealing. In addition to controlling gas, liquid, and steam media, they are also suitable for controlling sewage and media containing fibrous impurities. They are widely used in industries such as petroleum, químico, metallurgy, light industry, papermaking, power plants, and refrigeration.
Q941F and Q941Y type PN16~PN63 electric ball valves Product Features
(1) Baixa resistência a fluidos: Ball valves have the lowest fluid resistance of all valve types. Even reduced-bore ball valves have very low fluid resistance.
(2) Thrust bearings reduce stem friction torque, ensuring balanced and flexible operation of the stem over long periods.
(3) Excellent seat sealing performance: The sealing rings, made of materials such as PTFE, are easy to seal, and the sealing capacity of the ball valve increases with increasing medium pressure.
(4) Reliable stem sealing: Because the stem only rotates and does not move up or down, the stem packing seal is not easily damaged, and the sealing capacity increases with increasing medium pressure.
(5) Due to the good self-lubricating properties of materials such as PTFE, friction loss with the ball is low, extending the service life of the ball valve.
(6) The bottom-mounted stem and the raised step on the stem head prevent the stem from being ejected. If a fire causes damage to the stem seal, the raised step can still form metal-to-metal contact with the valve body, ensuring the stem seal.
Main technical parameters
Diâmetro nominal DN (milímetros) 15 20 25 32 40 50 65 80 100 125 150 200
Rated flow coefficient KV 21 38 72 112 170 273 384 512 940 1452 2222 3589
Nominal pressure (MPa) PN1.6, 2.5, 4.0, 6.4 MPa; ANSI 150, 300LB
Diferença de pressão permitida (MPa) ≤ pressão nominal
Valve body type two-stage cast ball valve
Connection form flange type, welding type, threaded type
Forma do núcleo da válvula “O” type spherical valve core
Sealing packing V-type polytetrafluoroethylene packing, flexible graphite packing, etc..
Flow characteristics: Approximate quick-opening type
Faixa de movimento 0~90°
Leakage Q according to GB/T4213-92, menor que 0.01% de KV nominal
Erro básico ±1%
Diferença de retorno ±1%
Zona morta ≤1% (adjustable)
Adjustable range 250:1 350:1
Configuration actuator can be equipped with PSQ, HQ, UNIC, 361RS, JO and other series of quarter-turn electric actuators
Control method: switch in position light (controle de interruptor de duas posições), passive contact signal, 1/5K potentiometer, intelligent adjustment (4~20mA analog signal control)
Actuator technical parameters
Actuator category Parameters of imported JOX series actuators Parameters of imported 3610R series actuators Parameters of imported JHQ series actuators
Power supply voltage Standard: 220V AC single-phase Optional: 110V AC single-phase, 380/440V AC three-phase, 24V/110V/220V AC
Output torque 50N·M～2000N·M 50N·M～1500N·M 50N·M～3000N·M
Movement range 0～90° 0～360° 0～90° 0～90°, 0°～270° optional
Control method: switch in position light (controle de interruptor de duas posições), passive contact signal, 1/5K potentiometer, intelligent adjustment (4~20mA analog signal control)
Action time 15 seconds/30 seconds/60 seconds 10 seconds/15 seconds/30 seconds 18S～112S
Protection device Overheating protection Overload protection Built-in overheating protection, overload protection
Ambient temperature -30°～60° -30°～60° -20℃～+70℃
Manual operation Same as attached handle operation Same as attached handle operation Mechanical clutch mechanism, equipped with handwheel operation
Mechanical limit Electrical and mechanical double limit Electrical and mechanical double limit 2 external adjustment bolts
Protection level IP65 IP55 IP65, IP67, IP68 can be customized
Explosion-proof level: No explosion-proof ExdⅡ BT4 ExdⅡ BT4, ExdⅡ CT6
Position measurement Optional switch or potentiometer Proportional control unit Potentiometer, proportional control unit
Drive motor 8W/E AC reversible motor squirrel cage asynchronous motor
Incoming line interface PE1/2〞Incoming line lock 2-PF 1/2〞Incoming line lock 2 PF 3/4”
Shell material Aluminum alloy steel, aluminum alloy steel, aluminum alloy, aluminum bronze, polycarbonate
Outer coating: dry powder, epoxy polyester, with super anti-corrosion function
It adopts a unique electric braking circuit, so it has high positioning accuracy, sensitive actuator, quick start and stop, and smooth operation. At the same time, it has the characteristics of strong anti-interference, anti-surge voltage and anti-breakdown capabilities.
It is suitable for regulating loops with frequent movements. When the continuity rate is 25%, the number of movements per hour can reach 630-1200 times.
Main Component Materials
Component Name Material
Valve Body, Valve Cover WCB 304(CF8) 316(CF8M) 316eu(CF3M)
Ball 2Cr13 + Nitrided 304 316 316eu
Valve Stem 2Cr13 304 316 316eu
Valve Seat Seal PTFE, Carbon Fiber + PTFE, Para-Polystyrene
Packaging V-Type PTFE, Flexible Graphite
Main Performance Specifications
Nominal Diameter DN (milímetros) DN15-300
Nominal Pressure PN (MPa) 1.0 1.6 2.5 4.0 6.4
Test Pressure Strength Test 1.5 2.4 3.75 6.0 9.60
Sealing Test 1.1 1.76 2.75 4.4 7.04
Low Pressure Air Tightness Test 0.5～0.7
Applicable Medium Water, óleo, vapor, nitric acid (temperature ≤200℃), acetic acid (temperature ≤200℃)
